
Oh wow! I can see the eye reflection now too, well spotted. Last week I reread from chapter 30 as I was missing it too and wanted to dig for clues. Around that time Yoonsung starts acting shifty, finds clothes to cover Hakyung and was adamant about Hyejin not sharing a room with Hakyung during the impromptu sleepover. I missed all the clues the first time. I simply thought he was being possessive. Such a good read, I'm kept on the edge of my seat with every new chapter!! The best.

Was quite shocked of that reflection!! And his words and actions from then on are songs to me, I keep finding ways to cry.
I really agree that it's such a good read, I'mso grateful to exist while reading it. I keep imagining a k-drama adaptation, too. This kind of storytelling and directing would be great to translate in a k-drama, especially knowing that Love in the Big City was done well, and with great actors, too.
I keep rereading this everytime I miss it, and I'm rereading it right now after the latest chapter revelation. I just found that aside from the signs that he knew Hakyung was a guy (eyeing what Hakyung wears and hid his upper body; asking him to go to America with him, etc), when they bid Hyejin (Kijoon's sister) and Yoonsung confesses his feelings, Hakyung's reflection in his eyes did not have long hair (wig). That was such a shocking thing to me to not notice in all the rereads I've done.
I think Yoonsung also already remembers his memories now. It might have been vague since he saw Hakyung looked back when a car was supposedly hit him, which made him do whatever it takes to keep Hakyung by his side, but from the moment they went to the lodge and saw Hakyung with something on his head (a cardigan, then a towel) Yoonsung's actions drastically changed. He was just waiting for Hakyung to tell it himself once he fall in love with Yoonsung (which goes back to when they bid Hyejin farewell and he confessed).
It's such a good adaptation, I hope it stays great until it ends, and I wish there's a way for this novel to be locally available in my area.